I am a huge fan of regular oil & filter changes, at least once per year or every 10,000 miles - or less if the car isn't driven often. Cars are much developed these days and are often filled with 'long life oil', another improvement on years gone by, but the slippery stuff still breaks down gradually reducing its effectiveness. If you own, or are buying the car, whatever your service schedule is, I'd still get VW to do at least a yearly 'oil filter' service anyway, even if you have to pay extra for it. You
can do it yourself of course but if VTrub do it, you will get a nice stamp in your service book and reduce the possibility of mishaps through poss damaging the drain plug or filter housing and avoid a 'you've taken the back off this' type of warranty voiding. I'm not saying
don't DIY, but on a new car with a warranty, best let the dealer do it. Oil is relatively cheap and basically is the biggest engine component as it comes into to contact with, and therefore lubricates, cleans and cools, almost every actual engine component. If the car is a rental, like mine, then just let the dealer do whatever. And, no I don't sell oil though I did once work in the motor industry

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The new Polo at 1.0 litre isn't a big engine so will be ok for city use but the odd long journey whereby the engine & oil get 'good and hot' will benefit mechanicals and the electrics. Reckon regular unleaded petrol in the UK will be ok too. My first Golf was a Mk5 1.6 petrol, the handbook reccomended at least 98 or 99 octane, it wasn't available locally so, being a bit tight & lazy, I stuck to 'regular' 95 or was it 97 octane (it's late and I'm tried) and it ran fine: well torquey with no 'pinking' and revved cleanly & good mpg. Same with last and current Golf, both Mk7 1.4 petrol. Ok, a 1.4 or 1.6 Golf engine isn't the same as the new Polo (well, duh) but the principles apply. As I was told a long time ago (in a galaxy far, far away

); take it easy the first 500 or so mles, then when you are ready for your new car, it'll be ready for you. Then neither drive it like you stole it, or like Driving Miss Daisey, just drive it....